On 2026/3/13 18:10, Heiko Carstens wrote:
> On Fri, Mar 13, 2026 at 05:47:37PM +0800, Jinjie Ruan wrote:
>> Use the generic TIF bits defined in <asm-generic/thread_info_tif.h> for
>> standard thread flags (TIF_SIGPENDING, TIF_NEED_RESCHED, TIF_NOTIFY_RESUME,
>> TIF_RESTORE_SIGMASK, TIF_SINGLESTEP, etc.) instead of defining
>> them locally.
>>
>> Arm64-specific bits (TIF_FOREIGN_FPSTATE, TIF_MTE_ASYNC_FAULT, TIF_SVE,
>> TIF_SSBD, etc.) are renumbered to start at bit 16 to avoid conflicts.
>>
>> This enables RSEQ optimizations which require CONFIG_HAVE_GENERIC_TIF_BITS
>> combined with the generic entry infrastructure (already used by arm64).
>>
>> Signed-off-by: Jinjie Ruan <[email protected]>
>> ---
>> arch/arm64/Kconfig | 1 +
>> arch/arm64/include/asm/thread_info.h | 62 ++++++++++++---------------
>> arch/s390/include/asm/thread_info.h | 7 ++-
>
> Acked-by: Heiko Carstens <[email protected]> # s390
>
>> arch/x86/include/asm/thread_info.h | 6 +--
>> include/asm-generic/thread_info_tif.h | 5 +++
>> 5 files changed, 38 insertions(+), 43 deletions(-)
>
> FWIW, I guess you want to do the same for loongarch was well?
Good point. I will include the LoongArch changes in the next version of
this patchset.
Thanks!
